JP4120530B2 - How to install support pillars for construction machinery - Google Patents

How to install support pillars for construction machinery Download PDF

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Publication number
JP4120530B2
JP4120530B2 JP2003297094A JP2003297094A JP4120530B2 JP 4120530 B2 JP4120530 B2 JP 4120530B2 JP 2003297094 A JP2003297094 A JP 2003297094A JP 2003297094 A JP2003297094 A JP 2003297094A JP 4120530 B2 JP4120530 B2 JP 4120530B2
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Prior art keywords
bottom plate
hole
mounting
mounting hole
support
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JP2005068700A (en
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尚弘 片山
隆之 奥西
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Kobelco Construction Machinery Co Ltd
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Kobelco Construction Machinery Co Ltd
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Priority to JP2003297094A priority Critical patent/JP4120530B2/en
Priority to US10/921,153 priority patent/US7431383B2/en
Priority to EP04104025A priority patent/EP1508644B1/en
Priority to AT04104025T priority patent/ATE356910T1/en
Priority to DE602004005276T priority patent/DE602004005276T2/en
Publication of JP2005068700A publication Critical patent/JP2005068700A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
    • E02F9/0816—Welded frame structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
    • B62D21/186—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17 for building site vehicles or multi-purpose tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/02—Connections between superstructure or understructure sub-units rigid

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Body Structure For Vehicles (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Jib Cranes (AREA)

Abstract

A construction apparatus includes a lower traveling structure on which an upper rotating superstructure is rotatably disposed. The rotating superstructure includes an upper frame provided with a bottom plate (12) and a supporter (16). The bottom plate (12) has an attachment hole (18) extending substantially perpendicular to the bottom plate (12). The supporter (16) is welded substantially perpendicular to the bottom plate (12) while one end of the supporter (16) is engaged with the attachment hole (18). Accordingly, the supporter (16) can be easily fixed to the bottom plate (12) while maintaining the perpendicularity and a proper height setting. <IMAGE>

Description

本発明は油圧ショベル等の建設機械において上部旋回体のアッパーフレーム底板にサポート柱を溶接によって取付ける方法に関するものである。   The present invention relates to a method of attaching a support column to an upper frame bottom plate of an upper swing body by welding in a construction machine such as a hydraulic excavator.

油圧ショベルを例にとって従来の技術とその問題点を説明する。   The conventional technology and its problems will be described using a hydraulic excavator as an example.

図７はミニショベルと称される小形の油圧ショベルを示している。この油圧ショベルは、クローラ式の下部走行体１上に上部旋回体２が垂直軸まわりに旋回自在に搭載され、この上部旋回体２に、ブーム３、アーム４、バケット５及びこれらを駆動するブーム、アーム、バケット各シリンダ６，７，８から成る作業装置Ａが装着されて構成される。   FIG. 7 shows a small hydraulic excavator called a mini excavator. In this hydraulic excavator, an upper swing body 2 is mounted on a crawler type lower traveling body 1 so as to be rotatable about a vertical axis, and a boom 3, an arm 4, a bucket 5 and a boom for driving them are mounted on the upper swing body 2. The working device A comprising the cylinders 6, 7, and 8 for the arms and buckets is mounted.

上部旋回体２は、アッパーフレーム９にエンジン等の機器類及びこれらを覆うガードパネル１０、運転席１１等を取付けて構成される。   The upper swing body 2 is configured by attaching an upper frame 9 with devices such as an engine, a guard panel 10 covering the same, a driver's seat 11 and the like.

アッパーフレーム９の概略構造を図８，９に示す。   The schematic structure of the upper frame 9 is shown in FIGS.

同図において、１２はアッパーフレーム９の底板で、この底板１２上において、左右両側（運転席１１に着座した状態で見たときの左右両側。以下にいう左右及び前後の方向性について同じ）に前後方向に延びる縦壁としてのメインフレーム（縦リブと称される場合もある）１３，１４と、このメインフレーム１３，１４を横切る状態で左右方向に延びる仕切壁１５とが設けられ、この仕切壁１５によって仕切られたアッパーフレーム後部（エンジンルーム）に図示しないエンジン等の駆動ユニットが設置される。   In this figure, reference numeral 12 denotes a bottom plate of the upper frame 9, on the left and right sides (left and right sides when viewed in the state of being seated on the driver's seat 11; the same applies to the left and right and front and rear directions below). Main frames (sometimes referred to as vertical ribs) 13 and 14 as vertical walls extending in the front-rear direction, and a partition wall 15 extending in the left-right direction across the main frames 13 and 14 are provided. A drive unit such as an engine (not shown) is installed at the rear portion (engine room) of the upper frame partitioned by the wall 15.

一方、図９に示すように底板１２上には複数個所にサポート柱１６‥が垂直に取付けられ、このサポート柱１６‥に作動油タンク、燃料タンク、バッテリ、コントロールバルブブロック、フロアプレート等の各種機材Ｂ(図１０に示す)が底板１２から浮いた状態で取付けられる。   On the other hand, as shown in FIG. 9, support pillars 16 are vertically attached to a plurality of locations on the bottom plate 12, and various kinds such as a hydraulic oil tank, a fuel tank, a battery, a control valve block, and a floor plate are attached to the support pillars 16. The equipment B (shown in FIG. 10) is attached in a state where it floats from the bottom plate 12.

また、サポート柱１６‥にはガードパネルブラケット１７‥が取付けられ、このガードパネルブラケット１７‥に図８，９のガードパネル１０が取付けられる。   Further, a guard panel bracket 17 is attached to the support column 16 and the guard panel 10 shown in FIGS. 8 and 9 is attached to the guard panel bracket 17.

このサポート柱１６‥は底板１２に溶接によって固着される。   The support columns 16 are fixed to the bottom plate 12 by welding.

従来、このサポート柱１６は、図１１に示すように底板１２上に載置された状態でその下端部周囲が底板１２の上面に溶接されている。図中、Ｗは溶接部分を示す。   Conventionally, as shown in FIG. 11, the support pillar 16 is welded to the upper surface of the bottom plate 12 in a state where the support pillar 16 is placed on the bottom plate 12. In the figure, W indicates a welded portion.

この場合、サポート柱１６は、上記のように各種機材Ｂやガードパネル１０が取付けられるため、正確な鉛直度と高さ寸法が求められる。   In this case, since the various equipment B and the guard panel 10 are attached to the support column 16 as described above, accurate verticality and height dimensions are required.

ところが、底板１２には、メインフレーム１３，１４等の主要構成部材を組み付ける際の溶接ひずみによってたわみが発生する。とくに、面積の割に板厚が小さい場合にこの底板１２のたわみが大きくなる。   However, the bottom plate 12 is bent due to welding distortion when assembling main components such as the main frames 13 and 14. In particular, when the plate thickness is small relative to the area, the deflection of the bottom plate 12 increases.

この結果、傾斜面に対してサポート柱１６を取付けることとなるため、サポート柱１６の鉛直度及び高さ寸法に狂いが生じ易く、これによって機材Ｂやガードパネル１０の取付けが困難となるという問題があった。   As a result, since the support column 16 is attached to the inclined surface, the verticality and height dimension of the support column 16 are likely to be distorted, which makes it difficult to attach the equipment B and the guard panel 10. was there.

また、溶接ひずみに関係なく底板上面の加工誤差やサポート柱１６の切断誤差によってサポート柱１６の鉛直度及び高さ寸法に狂いが生じる場合もある。   In addition, the verticality and height dimension of the support column 16 may be distorted due to a processing error on the upper surface of the bottom plate or a cutting error of the support column 16 regardless of welding distortion.

この点の調整手段として、底板１２の溶接ひずみに関してはサポート柱１６の取付前に底板１２に熱を加えてたわみを修正する方法をとることができる。また、底板１２やサポート柱１６自体の誤差に関しては、溶接前にこれらに切削等の手直しを加えることが考えられるが、いずれも時間と手間がかかるため、得策でない。   As an adjustment means for this point, with respect to the welding strain of the bottom plate 12, a method of correcting the deflection by applying heat to the bottom plate 12 before the support column 16 is attached can be adopted. In addition, regarding errors in the bottom plate 12 and the support columns 16 themselves, it is conceivable to modify them by cutting or the like before welding, but these are not advantageous because they take time and labor.

そこで本発明は、サポート柱をアッパーフレーム底板に対して鉛直度及び適正高さ寸法を確保しながら簡単に取付けることができる建設機械のサポート柱取付方法を提供するものである。   Therefore, the present invention provides a support column mounting method for a construction machine that can easily mount the support column to the upper frame bottom plate while ensuring the verticality and the appropriate height.

請求項１の発明は、下部走行体上に搭載される上部旋回体のアッパーフレームの底板上に、各種機材を底板から浮かせた状態で設置するためのサポート柱を溶接によって固着する建設機械のサポート柱取付方法において、上記底板に、メインフレームを含む主要構成部材を組み付けた後に、上記アッパーフレームの底板における上記サポート柱の取付部位に、内面が鉛直面となった取付穴を設け、サポート柱を、下端部がこの取付穴に嵌まり込む状態で底板上に立てて鉛直度及び高さを調整し、この状態でサポート柱を上記取付穴の部分で底板に溶接するものである。 According to the first aspect of the present invention, there is provided a support for a construction machine in which a support column for installing various equipments in a state of being floated from the bottom plate is fixed on a bottom plate of an upper frame of an upper swing body mounted on a lower traveling body by welding. in column mounting method, in the bottom plate, after assembling the main components including the main frame, the mounting portion of the support frame in the bottom plate of the upper frame, only set the mounting hole inner surface becomes vertical plane, support frame With the lower end fitted into the mounting hole, the vertical degree and height are adjusted by standing on the bottom plate, and the support column is welded to the bottom plate at the mounting hole in this state.

請求項２の発明は、請求項１の方法において、アッパーフレームの底板におけるサポート柱の取付部位に下穴をあけた後、この下穴の内面を鉛直に機械加工して取付穴を形成するものである。   According to a second aspect of the present invention, in the method of the first aspect, after a pilot hole is drilled in the support pillar mounting portion of the bottom plate of the upper frame, the inner surface of the pilot hole is machined vertically to form the mounting hole. It is.

請求項３の発明は、請求項２の方法において、四角形の四隅に当たる部分に逃げ穴を持った下穴をあけた後、この下穴における逃げ穴間の部分の内面を鉛直面に機械加工することにより、サポート柱の下端部が嵌まり込む取付穴を形成するものである。   According to a third aspect of the present invention, in the method of the second aspect, after a pilot hole having a relief hole is formed in a portion corresponding to the four corners of the quadrilateral, the inner surface of the portion between the relief holes in the pilot hole is machined into a vertical surface. Thus, a mounting hole into which the lower end portion of the support column fits is formed.

請求項４の発明は、請求項２の方法において、四角形の下穴をあけた後、この下穴の各辺部の内面を、断面円形のサポート柱の外周面に沿う平面視円弧状に機械加工することにより、断面円形のサポート柱の下端部が嵌まり込む取付穴を形成するものである。   According to a fourth aspect of the present invention, in the method of the second aspect, after a rectangular pilot hole is drilled, the inner surface of each side portion of the pilot hole is machined in an arc shape in plan view along the outer peripheral surface of the support pillar having a circular cross section. By processing, a mounting hole into which the lower end portion of the support pillar having a circular cross section is fitted is formed.

請求項５の発明は、請求項１〜４のいずれかの方法において、取付穴を、底板を貫通する貫通穴として設け、サポート柱の下端部を、この取付穴を貫通する状態で取付穴の部分で底板に溶接固着するものである。   According to a fifth aspect of the present invention, in the method according to any one of the first to fourth aspects, the mounting hole is provided as a through hole penetrating the bottom plate, and the lower end portion of the support column is inserted into the mounting hole in a state of penetrating the mounting hole. The part is welded to the bottom plate.

請求項６の発明は、請求項１〜４のいずれかの方法において、取付穴を、底板を貫通しない非貫通穴として設け、サポート柱の下端部を、この取付穴に嵌まり込んだ状態で取付穴の部分で底板に溶接固着するものである。   The invention of claim 6 is the method according to any one of claims 1 to 4, wherein the mounting hole is provided as a non-through hole that does not penetrate the bottom plate, and the lower end portion of the support column is fitted into the mounting hole. The fixing holes are fixed to the bottom plate by welding.

本発明によると、アッパーフレーム底板に、メインフレームを含む主要構成部材を組み付けた後に、底板におけるサポート柱の取付部位に、内面が鉛直面となった取付穴を設け、この後、底板上に各種機材を浮かせて取付けるためのサポート柱の下端部をこの取付穴に嵌め込んだ状態で底板に溶接するため、底板の溶接ひずみ(たわみ)や加工誤差、サポート柱の切断誤差に関係なく、サポート柱の鉛直度を確保することができる。 According to the present invention, the upper frame bottom plate, after assembling the main components including the main frame, the mounting portion of the support frame in the bottom plate, only set the mounting hole inner surface becomes vertical plane, thereafter, on the bottom plate Because the bottom of the support column for mounting various equipment in a floating state is fitted into this mounting hole and welded to the bottom plate, the support plate is supported regardless of welding distortion (deflection), processing errors, and cutting errors of the support column. The verticality of the column can be ensured.

また、取付穴に対するサポート柱下端部の嵌め込部分でサポート柱の高さ寸法調整が可能となるため、正確な高さ寸法を確保することができる。   In addition, since the height dimension of the support column can be adjusted at the fitting portion at the lower end of the support column with respect to the mounting hole, an accurate height dimension can be ensured.

この場合、請求項２〜４の方法によると、アッパーフレームの底板にあけた下穴の内面を鉛直に機械加工して取付穴を形成するため、サポート柱の鉛直度をより高めることができる。   In this case, according to the methods of claims 2 to 4, since the mounting hole is formed by vertically machining the inner surface of the prepared hole formed in the bottom plate of the upper frame, the verticality of the support column can be further increased.

ここで請求項３の方法によると、四角形の四隅に当たる部分に逃げ穴を持った下穴をあけた後、この下穴における逃げ穴間の部分の内面を鉛直面に機械加工することによって取付穴を形成するため、機械加工部分が少なくてすむ。このため、作業効率を上げることができる。   According to the method of claim 3, after preparing a pilot hole having a relief hole at a portion corresponding to the four corners of the quadrangle, the inner surface of the part between the relief holes in the pilot hole is machined into a vertical surface, thereby mounting the mounting hole. The number of machining parts can be reduced. For this reason, work efficiency can be raised.

一方、請求項４の方法によると、四角形の下穴をあけた後、この下穴の各辺部の内面を、断面円形のサポート柱の外周面に沿う平面視円弧状に機械加工することにより、断面円形のサポート柱の下端部が嵌まり込む取付穴を形成するため、丸い下穴をあけてその全周面を機械加工する場合と比較して、機械加工部分が少なくてすみ、作業効率を上げることができる。また、断面円形のサポート柱を外周複数個所で溶接するタップ溶接を行う場合に、円弧状部分を溶接位置として特定し、サポート柱の水平方向の向きを正確に設定することができる。   On the other hand, according to the method of claim 4, after drilling a rectangular pilot hole, the inner surface of each side portion of the pilot hole is machined into a circular arc shape in plan view along the outer peripheral surface of the support pillar having a circular section. In order to form a mounting hole into which the lower end of a support pillar with a circular cross-section fits, the number of machining parts can be reduced compared to the case where a round pilot hole is drilled and the entire peripheral surface is machined. Can be raised. Moreover, when performing the tap welding which welds the support pillar with a circular cross section at a plurality of locations on the outer periphery, the arc-shaped portion can be specified as the welding position, and the horizontal orientation of the support pillar can be accurately set.

請求項５の方法によると、サポート柱の下端部を、貫通穴である取付穴にこれを貫通する状態で嵌め込んで溶接するため、とくに底板の板厚が小さい場合にサポート柱の取付強度を高くし、かつ、高さ調整代を大きくとることができる。   According to the method of claim 5, since the lower end portion of the support column is fitted and welded in a state of passing through the mounting hole which is a through hole, the mounting strength of the support column is increased particularly when the thickness of the bottom plate is small. The height can be increased and the height adjustment allowance can be increased.

請求項６の方法によると、サポート柱の下端部を、非貫通穴である取付穴に嵌め込んで溶接するため、とくに底板の板厚が大きい場合でかつ取付穴に機械加工を施す場合に機械加工部分を必要最小限に少なくして作業効率を上げることができる。しかも、非貫通穴であるため底板の強度低下を抑えることができる。   According to the method of claim 6, since the lower end portion of the support pillar is fitted into the mounting hole which is a non-through hole and welded, the machine is particularly machined when the bottom plate is thick and the mounting hole is machined. Work efficiency can be increased by reducing the number of processed parts to the minimum necessary. And since it is a non-through-hole, the strength fall of a baseplate can be suppressed.

本発明の実施形態を図１〜図７によって説明する。   An embodiment of the present invention will be described with reference to FIGS.

第１実施形態(図１〜図３参照)
サポート柱１６は、設定高さ寸法よりも長めの丸または四角パイプ状に形成され、外周にガードパネルブラケット１７が取付けられる。 1st Embodiment (refer FIGS. 1-3)
The support column 16 is formed in a round or square pipe shape longer than the set height, and a guard panel bracket 17 is attached to the outer periphery.

このサポート柱１６は、アッパーフレーム底板１２に設けられた貫通穴である取付穴１８に嵌め込まれ、高さ調整された後、取付穴１８の上下両側で底板１２に溶接固着されて、その上端に機材Ｂが設置される。   The support column 16 is fitted into a mounting hole 18 which is a through hole provided in the upper frame bottom plate 12, adjusted in height, and then welded and fixed to the bottom plate 12 on both upper and lower sides of the mounting hole 18. Equipment B is installed.

このサポート柱１６の取付手順を図３によって説明すると、底板１２に、図８,９に示すメインフレーム１３,１４を含む主要構成部材を溶接により組み付けた後、まず(イ)に示すように底板１２にドリル等で下穴１８aをあける。この下穴１８aは、底板１２の水平度(溶接ひずみや加工誤差)に関係なく鉛直にあける。 The procedure for attaching the support column 16 will be described with reference to FIG. 3. After the main structural members including the main frames 13 and 14 shown in FIGS. 8 and 9 are assembled to the bottom plate 12 by welding, first, as shown in FIG. 12 is drilled with a drill hole or the like. The pilot hole 18a is formed vertically regardless of the level of the bottom plate 12 (welding distortion or processing error).

この後、(ロ)に示すようにこの下穴１８aの内周面に機械加工としてフライス加工(切削)を施して、内周面が完全鉛直面となった取付穴１８を形成する。ここで、機械加工はフライス加工に限定されるものではなく、レーザー加工、研削加工、リーマ通し、ブローチ加工など、適宜選択することができる。   Thereafter, as shown in (b), the inner peripheral surface of the pilot hole 18a is subjected to milling (cutting) as machining to form the mounting hole 18 in which the inner peripheral surface is a completely vertical surface. Here, the machining is not limited to milling, and can be appropriately selected from laser machining, grinding, reaming, broaching, and the like.

次いで、(ハ)に示すようにこの取付穴１８にサポート柱１６の下端部を上から嵌め込んで貫通させ、(ニ)に示すように高さ寸法Ｈの調整を行った後、図１，２に示すように取付穴１８の部分(通常は上下両側)で底板１２に溶接する。   Next, as shown in (c), the lower end portion of the support column 16 is fitted into the mounting hole 18 from above, and after adjusting the height dimension H as shown in (d), FIG. As shown in FIG. 2, welding is performed to the bottom plate 12 at the mounting hole 18 (usually both upper and lower sides).

なお、(ニ)の高さ調整段階で、機材Ｂを仮置きした状態でこの機材Ｂに合わせてサポート柱１６の高さ寸法Ｈを調整するいわゆる現物合わせを行ってもよい。   In addition, in the height adjustment stage of (d), so-called in-situ alignment may be performed in which the height dimension H of the support column 16 is adjusted in accordance with the equipment B while the equipment B is temporarily placed.

このように、アッパーフレーム底板１２に、内面が鉛直面となった取付穴１８を設け、この取付穴１８に、機材Ｂを底板１２から浮かせて設置するためのサポート柱１６の下端部を嵌め込んだ状態で底板１２に溶接するため、底板１２の溶接ひずみ(たわみ)や加工誤差、それにサポート柱１６の切断誤差に関係なく、サポート柱１６の鉛直度を確保することができる。 Thus, the upper frame base plate 12, only setting the mounting holes 18 of the inner surface becomes vertical plane, to the mounting hole 18, fitted with a lower end of the support frame 16 for installing float the equipment B from the bottom plate 12 Since it is welded to the bottom plate 12 in the recessed state, the verticality of the support column 16 can be ensured regardless of welding distortion (deflection), processing error of the bottom plate 12 and cutting error of the support column 16.

また、上記のようにサポート柱１６を自由に高さ調整できるため、正確な高さ寸法を確保することができる。   Moreover, since the height of the support column 16 can be freely adjusted as described above, an accurate height dimension can be ensured.

さらに、底板１２にあけた下穴１８ａの内面を鉛直に機械加工して取付穴１８を形成するため、サポート柱１６の鉛直度をより正確に管理することができる。   Furthermore, since the attachment hole 18 is formed by vertically machining the inner surface of the prepared hole 18a formed in the bottom plate 12, the verticality of the support column 16 can be managed more accurately.

加えて、サポート柱１６の下端部を、貫通穴である取付穴１８にこれを貫通する状態で嵌め込んで溶接するため、とくに底板１２の板厚が小さい場合に取付強度を高くし、かつ、高さ調整代を大きくとることができる。   In addition, since the lower end portion of the support column 16 is fitted and welded to the mounting hole 18 that is a through hole so as to pass through, the mounting strength is increased particularly when the thickness of the bottom plate 12 is small, and The height adjustment allowance can be increased.

第２、第３実施形態(図４，５参照)
第１実施形態との相違点のみを説明する。 Second and third embodiments (see FIGS. 4 and 5)
Only differences from the first embodiment will be described.

第２実施形態においては、図４に示すようにサポート柱１６の下端部を取付穴１８に対して非貫通状態で嵌め込み、取付穴１８内の範囲で高さ調整した後、底板１２に溶接している。Ｗはこの溶接部分を示す。   In the second embodiment, as shown in FIG. 4, the lower end portion of the support column 16 is fitted into the mounting hole 18 in a non-penetrating state, adjusted in height within the range of the mounting hole 18, and then welded to the bottom plate 12. ing. W indicates this welded portion.

第３実施形態においては、図５に示すように取付穴１８を非貫通穴として設け、この取付穴１８の高さ範囲内でサポート柱１６を高さ調整した後、底板１２に溶接している。   In the third embodiment, as shown in FIG. 5, the mounting hole 18 is provided as a non-through hole, the height of the support column 16 is adjusted within the height range of the mounting hole 18, and then welded to the bottom plate 12. .

この両実施形態によると、サポート柱１６の下端部を、取付穴１８に非貫通状態で嵌め込んで溶接するため、とくに底板１２の板厚が大きい場合に取付穴内面の機械加工部分を必要最小限に少なくして作業効率を上げることができる。   According to both the embodiments, the lower end portion of the support column 16 is fitted in the mounting hole 18 in a non-penetrating state and welded, so that the machined portion of the inner surface of the mounting hole is the minimum necessary particularly when the thickness of the bottom plate 12 is large. The work efficiency can be increased by reducing it to the minimum.

また、第３実施形態によると、取付穴１８が非貫通穴であるため底板１２の強度低下を抑えることができる。   Moreover, according to 3rd Embodiment, since the attachment hole 18 is a non-through hole, the strength reduction of the baseplate 12 can be suppressed.

その他の実施形態(図６参照)
図６の(イ)に示すように、底板１２に、四角形でかつ四隅に逃げ穴２０‥を持った四角形の下穴１８ａをあけた後、この下穴１８ａにおける逃げ穴２０‥間の部分の内面(斜線を付した部分)を平面視円弧状の鉛直面に機械加工することにより、断面円形のサポート柱の下端部が嵌まり込む取付穴１８を形成してもよい。 Other embodiments (see FIG. 6)
As shown in FIG. 6A, after the bottom plate 12 is formed with a rectangular pilot hole 18a having a square shape and relief holes 20 at the four corners, a portion between the relief holes 20a in the pilot hole 18a is formed. The mounting hole 18 into which the lower end portion of the support pillar having a circular cross section is fitted may be formed by machining the inner surface (the hatched portion) into a vertical surface having an arc shape in plan view.

また、同(ロ)に示すように、逃げ穴２０‥付きの四角形の下穴１８の各辺部内面を直線状のまま鉛直面に機械加工することにより、断面四角形のサポート柱の下端部が嵌まり込む取付穴１８を形成してもよい。   Further, as shown in (b), by machining the inner surface of each side portion of the rectangular pilot hole 18 with the relief holes 20 into a vertical surface while maintaining a straight shape, the lower end portion of the support pillar having a quadrangular section is formed. A fitting hole 18 to be fitted may be formed.

この両実施形態によれば、取付穴内面の機械加工部分が少なくてすむため、作業効率を上げることができる。また、(ロ)の実施形態によると、四角形の取付穴１８の四隅に設けられた逃げ穴２０‥によって角部分にアールが生じないため、断面四角形のサポート柱にフィットする取付穴が得られ、鉛直度をより高めることができる。   According to both the embodiments, the machining portion on the inner surface of the mounting hole can be reduced, so that the working efficiency can be increased. In addition, according to the embodiment of (b), since the corners are not rounded by the relief holes 20 provided at the four corners of the square mounting hole 18, a mounting hole that fits the support pillar having a square cross section is obtained. The verticality can be further increased.

一方、同(ハ)に示すように、四角形の下穴１８ａをあけた後、この下穴１８ａの各辺部の内面を、断面円形のサポート柱の外周面に沿う平面視円弧状に機械加工することにより、断面円形のサポート柱の下端部が嵌まり込む取付穴１８を形成してもよい。   On the other hand, as shown in (c), after the rectangular pilot hole 18a is drilled, the inner surface of each side portion of the pilot hole 18a is machined into an arc shape in plan view along the outer peripheral surface of the support pillar having a circular cross section. By doing so, you may form the attachment hole 18 in which the lower end part of a support pillar of circular cross section fits.

こうすれば、丸い下穴をあけてその全周面を機械加工する場合と比較して、機械加工部分が少なくてすむため、作業効率を上げることができる。また、断面円形のサポート柱を外周複数個所で溶接するタップ溶接を行う場合に、円弧状部分を溶接位置として特定し、サポート柱の水平方向の向きを正確に設定することができる。   By doing so, compared with the case where a round pilot hole is drilled and the entire peripheral surface thereof is machined, the machining portion can be reduced, so that the working efficiency can be increased. Moreover, when performing the tap welding which welds the support pillar with a circular cross section at a plurality of locations on the outer periphery, the arc-shaped portion can be specified as the welding position, and the horizontal orientation of the support pillar can be accurately set.

本発明の第１実施形態においてサポート柱をアッパーフレームの底板に取付けた状態を示す断面図である。It is sectional drawing which shows the state which attached the support pillar to the baseplate of the upper frame in 1st Embodiment of this invention. 図１の一部拡大図である。FIG. 2 is a partially enlarged view of FIG. 1. (イ)(ロ)(ハ)(ニ)はサポート柱の取付手順を示す図である。(A), (B), (C), and (D) are diagrams showing a procedure for mounting the support column. 本発明の第２実施形態においてサポート柱をアッパーフレームの底板に取付けた状態の図２相当図である。FIG. 9 is a view corresponding to FIG. 2 in a state where a support column is attached to a bottom plate of an upper frame in a second embodiment of the present invention. 本発明の第３実施形態においてサポート柱をアッパーフレームの底板に取付けた状態の図２相当図である。FIG. 9 is a view corresponding to FIG. 2 in a state where a support column is attached to a bottom plate of an upper frame in a third embodiment of the present invention. (イ)(ロ)(ハ)はそれぞれ本発明の他の実施形態を示す取付穴の平面図である。(A), (B), and (C) are plan views of mounting holes showing other embodiments of the present invention, respectively. 本発明が適用される油圧ショベルの側面図である。1 is a side view of a hydraulic excavator to which the present invention is applied. 油圧ショベルの上部旋回体を構成するアッパーフレームの概略平面図である。It is a schematic plan view of the upper frame which comprises the upper revolving body of a hydraulic shovel. 同斜視図である。It is the same perspective view. 従来のサポート柱の取付構造を示す断面図である。It is sectional drawing which shows the attachment structure of the conventional support pillar.

符号の説明Explanation of symbols

１ 下部走行体
２ 上部旋回体
９ アッパーフレーム
１２ 底板
１６ サポート柱
１８ 取付穴
１８ａ 下穴
２０ 下穴の逃げ穴 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving body 9 Upper frame 12 Bottom plate 16 Support pillar 18 Mounting hole 18a Pilot hole 20 Pilot hole escape hole

Claims (6)

下部走行体上に搭載される上部旋回体のアッパーフレームの底板上に、各種機材を底板から浮かせた状態で設置するためのサポート柱を溶接によって固着する建設機械のサポート柱取付方法において、上記底板に、メインフレームを含む主要構成部材を組み付けた後に、上記アッパーフレームの底板における上記サポート柱の取付部位に、内面が鉛直面となった取付穴を設け、サポート柱を、下端部がこの取付穴に嵌まり込む状態で底板上に立てて鉛直度及び高さを調整し、この状態でサポート柱を上記取付穴の部分で底板に溶接することを特徴とする建設機械のサポート柱取付方法。 The upper rotating body of the upper frame of the bottom plate on which is mounted on the lower traveling body, a construction machine of the support frame mounting method of fixing a support frame for mounting in a state of floating various equipment from the bottom plate by welding, the bottom plate to, after assembling the main components including the main frame, the mounting portion of the support frame in the bottom plate of the upper frame, only set the mounting hole inner surface becomes a vertical plane, the support frame, a lower end the mounting A method of mounting a support column for a construction machine, wherein the vertical column and the height are adjusted by standing on the bottom plate while being fitted in the hole, and the support column is welded to the bottom plate at the mounting hole in this state. アッパーフレームの底板におけるサポート柱の取付部位に下穴をあけた後、この下穴の内面を鉛直に機械加工して取付穴を形成することを特徴とする請求項１記載の建設機械のサポート柱取付方法。   2. A support pillar for a construction machine according to claim 1, wherein after the pilot hole is drilled in the mounting portion of the support pillar in the bottom plate of the upper frame, the inner surface of the pilot hole is vertically machined to form the mounting hole. Mounting method. 四角形の四隅に当たる部分に逃げ穴を持った下穴をあけた後、この下穴における逃げ穴間の部分の内面を鉛直面に機械加工することにより、サポート柱の下端部が嵌まり込む取付穴を形成することを特徴とする請求項２記載の建設機械のサポート柱取付方法。   A mounting hole that fits the lower end of the support column by drilling a pilot hole with a relief hole at the four corners of the square and then machining the inner surface of the part between the relief holes in the pilot hole into a vertical surface. The support pillar mounting method for a construction machine according to claim 2, wherein: 四角形の下穴をあけた後、この下穴の各辺部の内面を、断面円形のサポート柱の外周面に沿う平面視円弧状に機械加工することにより、断面円形のサポート柱の下端部が嵌まり込む取付穴を形成することを特徴とする請求項２記載の建設機械のサポート柱取付方法。   After drilling a square pilot hole, the bottom surface of the support pillar with a circular cross section is formed by machining the inner surface of each side of the pilot hole into a circular arc in plan view along the outer peripheral surface of the support pillar with a circular cross section. 3. The support pillar mounting method for a construction machine according to claim 2, wherein a fitting hole to be fitted is formed. 取付穴を、底板を貫通する貫通穴として設け、サポート柱の下端部を、この取付穴を貫通する状態で取付穴の部分で底板に溶接固着することを特徴とする請求項１〜４のいずれか１項に記載の建設機械のサポート柱取付方法。   The mounting hole is provided as a through hole penetrating the bottom plate, and the lower end portion of the support pillar is welded and fixed to the bottom plate at the mounting hole portion in a state of passing through the mounting hole. 2. A method of attaching a support pillar for a construction machine according to claim 1. 取付穴を、底板を貫通しない非貫通穴として設け、サポート柱の下端部を、この取付穴に嵌まり込んだ状態で取付穴の部分で底板に溶接固着することを特徴とする請求項１〜４のいずれか１項に記載の建設機械のサポート柱取付方法。   The mounting hole is provided as a non-through hole that does not penetrate the bottom plate, and the lower end portion of the support column is welded and fixed to the bottom plate at the portion of the mounting hole while being fitted in the mounting hole. 5. A method of attaching a support pillar for a construction machine according to any one of 4 above.
JP2003297094A 2003-08-21 2003-08-21 How to install support pillars for construction machinery Expired - Fee Related JP4120530B2 (en)

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JP2003297094A JP4120530B2 (en) 2003-08-21 2003-08-21 How to install support pillars for construction machinery
US10/921,153 US7431383B2 (en) 2003-08-21 2004-08-19 Construction machine and method for manufacturing the same
EP04104025A EP1508644B1 (en) 2003-08-21 2004-08-20 Construction machine and method for manufacturing the same
AT04104025T ATE356910T1 (en) 2003-08-21 2004-08-20 CONSTRUCTION MACHINE AND METHOD FOR PRODUCING THE SAME
DE602004005276T DE602004005276T2 (en) 2003-08-21 2004-08-20 Construction machine and method for its production

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ATE356910T1 (en) 2007-04-15
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DE602004005276D1 (en) 2007-04-26
US7431383B2 (en) 2008-10-07
EP1508644A1 (en) 2005-02-23
US20050040211A1 (en) 2005-02-24
JP2005068700A (en) 2005-03-17

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